As of 2013, Ontario is the largest Canadian province in terms of population. The population of Ontario is estimated at 13,537,994 people. Five other Canadian provinces have a population of over 1 million people, with Quebec having the second highest population with 8,155,334.
As of 2013, Alberta is the fourth largest Canadian province with regard to population with an estimated 4,025,074 people, roughly half a million people less than British Columbia, which has the third largest population. However, Alberta is the fastest growing province, with its population increasing 3.4 percent from 2012 to 2013. This population increase in Alberta is primarily due to international and inter-provincial migration.